Oven-door.



Enma more crm, or Umoumwrt 7 ovarmooa.

Application led December 8, 1912.

To all whom it may concern:

Be it known that I, EDDIE F. GRIFFIN, a citizen of the United States, residing at Uniontown, in the county of Fayette and State of Pennsylvania, have invented new and useful Improvements in Oven-Doors, of which the following is a specification.

rllhis invention relates to oven doors, and its object is to provide a door for ovens comprising superposed door sections, and means for conveniently manipulating the same, whereby the doors may be readily and conveniently moved into and out of position to close or open the oven doorway, and whenV moved out of closing position will be supported in an eilicient manner.

Another object of the invention is to pro-- vide a pair of superimposed door sections, the upper section of which being capable of independent movement so as to increase the air supply to the coke oven.

A further object of the invention is to provide doors which may be bodily withdrawn from the doorway, and which in their withdrawal movements will clear the door arch, and further to provide doors which are adapted to sustain wear and tear, and which are at thesame time light enough to enable them to be readily handled.

A still further object of the invention is the provision of a structure wherein the pulleys are arranged above and spaced laterally from said door sections so that the upper door section can be thrown 0E its balance so as to increase the air supply to the coke oven. n

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a front elevation of an oven showing the application of the invention. Fig. 2 is a vertical section on the line 2-2 of Fig. 1.

Referring to the drawings, 1 designates the front wall of an oven, provided with a doorway 2, the frame of the doorway including the usual arch 3 and base or sill plate 4. a

5 and 6 designate the door sections, which are adapted to rest upon the sill plate 4 and to fit snugly within the doorway in super- 4posed relation to close the same during the operation of the furnace. As shown, the lower door section 5 is preferably of greater di- Specieation: of Letters Patent.

Patenten ay ai. tam.

Serial No. 735,32.

mensions than the upper door 6, said lowerl door' section 5 bein of greater depth than the upper door section and adapted to close the doorway for a distance greater than onehalt` the depth thereof, while the upper door section closes the remainder of the doorway and is properly shaped to accommodate it-` self to the curvature of the arch 3.

Each door section is of greatest thickness at its base, and its outer face thence slopes upward toa relatively less thickness at its topV or upper edge, thus making the door sec.- tion of greater strength and capacity for wear at its base, although for reasons to be stated the. wear at this point will be slight, while at the same time providing a door sec@ tion which is of suiiicient strength and rigidity and of maximum lightness so as to be conveniently handled.- The meeting edges of the respective door sections are provided with flanges 7 and 8 adapted to lap when said door sections are applied, to form a closed joint.

The outer sloping face 9 of the lower door section 5 is concaved as shown at 1() on opposite sides of its center, to further reduce weight, while the upper door is provided with a sloping face 11.

The upper central portions of the outer sloping faces of the respective door sections are provided with projecting lugs 13 and 14 through which pass pintle` pins 15 and 16 supporting hails or pivoted connecting elements 17 and 18. The door section 6 is limperforate, while the door section 5 is provided with draft openings 19, which may be sealed by any suitable type of closure when occasion requires.

1n practice, each door section is preferably composed of a single block of reractory material, and in order to enable said door sections to be conveniently opened and adjusted in position to close the doorway, as well as to permit them to be suspended when not in uhse, suitable controlling and suspension devlces are provided. These consist of Hexible ropes or cables 2O and 21 which are fastened at one end to the bails17 and 18,

jects beyond the front wall thereof, thus enabling the door sections to be operated without interference from any part of the furnace.

It will be readily seen from the foregoing description that in order to remove the door sections, it is simply necessary to pull upon the free ends of the suspending ropes or cables to first elevate and swing the door 6 outward, and then elevate and swing the door 5 outward, whereupon by engaging theY cables with the members 26'and 27 the doors may be supported in open position. By such construction and mode of mounting the doors, the said doors may be readily and conveniently handled and manipulated, thus overcoming known objections to doors of the hinged type.

I claim A coke oven having a door way, a pair of superimposed sections fitting in said door way each of said sections increasing in thickness from its upper edge to its base, apertured ears projecting laterally from said sections, a pair of pulleys above and spaced laterally from said ears, and flexible inclined cables assing over said pulleys and connected witlliJ said ears. v

In testimony whereof I alix my signature in presence of two witnesses.

EDDIE FLOYD GRIFFIN. Witnesses:

PETER A. LARKJN, JOHN GRHFIN. 

